Fastener



Julys 1928' F. s. CAR

FASTENER Original Filed Feb. 2 6, 1925 V f7 V IS7/vena?.-

Patented July 3, 1928i.

FRED S. CARR, OF NEWTON, MASSCHUSETTS,

ASSIGNOR TO CARB FASTENEE OOI- PANY, OF CAMBRIDGE, MASSACHUSETTS, ACORPORATION OF MAME.

FASTENER. i

y Original application led February 26, 1925, Serial No. 11.695. Dividedand this application iled August 25, 1925.

This invention aims to provide an improved fastener elementparticularly, though not exclusively, useful as a trim strip fastenerelement.

The application is a. division application. Serial No. 11,695, aiv 2G.1925. l

In the drawings, which illustrate a preferred embodiment of my inventionFigure 1 is an elevation view of a vehicle body window showing oneof theuses of my invention:

Fig. 2 is a section on the line 2-2 of F ig. 1. showing the windowcasing, the trim strip and one of the fastening elements incrosssection;

Fig. 3 is a section of the trim strip showing one of the' fasteningelements being secured thereto: u

Figs. 4. 5 and 6 include a plan, a side and a back view of the studelement of the separable fastening means: and

of my prior tiled Febru- Fig. 7 is a sectional view of the stud por-ktion separatefrom the attaching portion.

Referring to the drawings, I have shown a novel method of securingtrimming strips of wood.'or other like relatively rigid strips, to aframe for providing a finished edge.

Hcretofore window finishing strips', particularly in automobile bodyconstruction, and strips for other parts of the body have been securedthereto by means of nails, screws or the like which had their headsexposed at the outer surface of the trimming strip.V This method ofattachment is eXpensive and. moreover, it is inconvenient inasmuch asthe nails or screws cannot be easily and quickly removed to permitaccess to underlying parts, such as .to permit replace- *0 ment of abroken window or to reupholster the inside of the car. Strips thussecured to the body become marked and scratched by the tools used toremove the nails or screws and are thereafter unsightly.

L5 The specific embodiment of my invention illustrated provides atrimming installation including a trim strip which can be easily andquickly removed and replaced without in any way injuring its finish.Also o 0 metal fastening parts, such as nails or screws. are exposedwhich may become rusted or marred. y v

Referring to Figs. 1 and 2, Tha-ve shown the window frame part ofthebody of a Serial No. 52,317.

vehicle which includes" the 'frame parts 1 formmg the frame of thewindow, the u holstery fabric 2 at t-he inside of the body overlappingthe edge 3 of the window frame and the finishing trim strips 4 concealinthe overlapped edges of the upholstery fa ric. $0 These strips 4 aresecured to the frame part 1 by a plurality of separable fastener ele`ments, some of'which are presented by the trim strips and theircooperating elements belng presented by the frame part 1. i

This type of trimming installation can be manufactured easily andinexpensively and a great saving is effected because ofthe speed withwhich the parts may be assembled. Also the trim strips 4 may be quicklyre- 70 moved for revarnishing, to permit change or washing of theupholstery or for access to any mechanical parts which may underlie theupholstery.

The fastening means, ,as illustrated, com- 76 prise a.stud-receivingaperture formed in the window frame part 1 and a stud,preferably shiftable relative to the aperture 5, secured to the trimstrip as best illustrated in Fig. 2. The stud is formed of two parts, a80 casing 6 presenting an aperture 7 in the front face thereof, and aplurality of attaching prongs 8 for securing the casing to the woodentrim strip 4'. The second part comprises a stud or socket-engaging part9 85 I having-a head 10, a neck 11, ashank portion 12, an upwardlyflared portion 13 surrounding the shank 12 and a reversely bent ringlikebase portion 14 at the upper periphery of the upwardly flared portion,`substantially in the same plane as the upper end `of the shank portion12. The head, neck,

shank and upwardly flared portions of the stud part 9 are separated by aplurality of slits 14n which permit expansion and con- 95' traction ofthe head to permit it to pass into the stud-receiving aperture 5.

The socket-engaging part 9 is held in the casing by a plurality of ears15 bent inwardly froml the edge of the casing between the prongs 8 andextending over the periphery of the base of the stud, as illustrated inFig. 6'. The head 10 and neck 11 of the stud pass through the aperture 7in the casing for engagement in the stud-receiving aper- 106 ture in theframe 1. I prefer to have the stud part 9 shiftable laterally relativeto the casing 6 and therefore the aperture 7 in the casing is larger indiameter than the diameter of the head 10 or neck 11 of the stud and thecasing 6 is larger in diameter than the baser14 of the stud.

To secure the stud element to the trim strip 4, I rst provide a drilledhole or recess 16 in the strip, which extends only partly into the strip4 and presents at the bottom of the recess, adjacent its periphery, anannular an gular or anvil portion 17. Next the stud element is placed inthe recess 16 so that the ends of the prongs 8, which are initiallycurvilinearl bent outwardly, are seated a ainst the anvif'portion 17,as` illustrated in ig. 3. Pressure is then exerted upon the front faceof the casing by al suitable tool 18 (Fig. 3j until the tool vseatsagainst the inner face of the trim strip 4. This pressure causes theprongs to curve outwardly into the wood (Fig. 2) and provide aflush-type casing so `that only the head 10 and neck 11 of the studelement ext-end beyond the inner face of the strip 4.

This method `of attachment-is neat because nothing is'presented at theouter face of the trim strip and it is also very strong and durablebecause the prongs are spread out over and grip a relatively large areaof the strip to provide a firm fastening means for the st ud element.

Assembly oftthe installation` is effected by stretching the upholsteryfabric 2 over the frame 1 and securing it thereto, as by ceme'nting theedges to that face ,of the .frame that presents the stud-receivingapertures 5. Holes 19 (Fig. 2) are provided in thefabric to permitaccess to the stud-receiving apertures and the trim strips 4 are securedto frameby pressing the heads 11 of the studs into the stud-receivingaperturesv 5. The heads contract as they pass through the apertures andthe sides of the heads are so shaped that `they draw the trim strips 4firmly against the upholstery fabric to provide a neat and finishedappearance to the body of thevehicle. During engagement of the studs inthe stud-receiving aperture 5, the stud parts 9 may shift laterallyrelative to the trim strips 4 to align with the apertures which may havebeen punched or drilled slightly out of alignment.

Separation of the fastener elements is effected by inserting arelatively thin-bladed instrument between the trim strip 4 and thefabric 2 and prying upwardly thereon to pull the studs vout ofengagement with the sockets.

While I have shown and described a preferred embodiment of my invention,it will be understood that changes involving omission, substitution,alteration and reversal of parts, and even changes in the mode ofoperation, may be made without departing from the scope of'm invention,which is best'defined in the fo owing claims.

part assembled with said casing part, a plurality of initially bentattaching prongs extending from said casing part for securing saidcasing part to a support and a plurality of ears extending inwardly fromsaidl casing part at points located between said attaching prongsthereby to hold the casing part aid stud part in assembled relation.

3. A fastener stud element comprising a head, a neck, a shank and a baseportion, said base portion flaring upwardly from said shank so that theouter peripheral por# tion of said base portion lies substantiallypermit contraction and expansion of said head for engagement with asocket aperture of fixed dimensions and a revcrsely bent flange portionformed integral with said base portion at-the periphery to preventaccidental splitting of said base portion adj acent the end of saidslits during contraction and expansion of said stud element.

4. A fastener stud for trimming installations'comprising, incombination, a casing part, a laterally shiftable socket-engaging partassembled with said casing lpart and aving a head extending from saidcasing part at one side thereof and' a plurality of outwardly bentattaching prongs presented at the opposite side of the casing art forsecuring said casing part to a suita le support, said socket-engagingpart being shiftable laterally relativeto )said casing part to permitalignment with 'alcoo'perating socket.

5. A fastener studfor trimming installations comprising, .incombination, a ,casing part, a laterally shiftable resilient socket! Intestimony whereof, I-have signed my"M4 name to this specification.

FRED S. CARR.

-in a plane with said neck, a plurality of in-

